GRE36套阅读 求解答

朔夕茂UID: 3601274

Experiments show that insects can function as pollinators  
of cycads, rare, palmlike tropical plants. Furthermore,  
cycads removed from their native habitats—and therefore  
from insects native to those habitats—are usually infertile.  
Nevertheless, anecdotal reports of wind pollination in  
cycads cannot be ignored. The structure of cycads male  
cones is quite consistent with the wind dispersal of pollen,  
clouds of which are released from some of the larger cones.  
The male cone of Cycas circinalis, for example, sheds  
almost 100 cubic centimeters of pollen, most of which is  
probably dispersed by wind. Furthermore, the structure of  
most female cycad cones seems inconsistent with direct  
pollination by wind. Only in the Cycas genus are the  
females' ovules accessible to airborne pollen, since only in  
this genus are the ovules surrounded by a loose aggregation  
of megasporophylls rather than by a tight cone.     
(141 words)   

7. The evidence in favor of insect pollination of cycads   
presented in the second sentence would be more   
convincing if which of the following were also true?  
(A) Only a small variety of cycad species can be   
successfully transplanted.   
(B) Cycads can sometimes be pollinated by means   
other than wind or insects.   
(C) Insects indigenous to regions to which cycads are   
transplanted sometimes feed on cycads.   
(D) Winds in the areas to which cycads are usually   
transplanted are similar to winds in cycads'   
native habitats.   
(E) The transplantation of cycads from one region to   
another usually involves the accidental removal   
and introduction of insects as well.
这套阅读中，该题求指导。
另外，这套题中，作者的观点是
1：虫煤
2：可能风媒
3：最后还是虫煤
为什么我在18min计时的时候根本看不出来作者的观点这么复杂！！！！！！！！！！！
我这都36套了！！求拯救！！！！！

朔夕茂UID: 3601274

是不是 主要证明native就可以了啊
这个题目我找的是关键字对应，根本没看内容
关键字  native， insects
所以选的 E
答案是D

wsjenglishUID: 3643341

主要就是再说到底是风还是虫子在传粉。
第二句话说这个植物离开生存地后不能繁育。造成这个结果可能是虫子和风两种原因。所以要控制变量，风一样研究虫子；或者虫子一样研究风。